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Gnuplot » Historique » Version 2

François Rioult, 03/02/2011 20:13

1 1 François Rioult
h1. Gnuplot
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h2. Synopsis
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This operator has no parameter, two inputs (the GNUplot script and the data) and one output (the plot). It launches GNUplot for generating a .PNG image.
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h2. Parameters
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None.
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h2. Inputs
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13 2 François Rioult
2 input files : 
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* the first is the @GNUplot@ script. This script uses a <pre>@file@<pre> string, that is dynamically replaced with the real name by the script.
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* the second is the data to be plot.
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h2. Outputs
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1 output: the .PNG image representing the plot.
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h2. Shell Code
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<pre>
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#!/bin/bash
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# this shell uses gnuplot with the script as first input on the data
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# on the second output
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# the @file@ string in the gnuplot script is replaced by the data file.
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script=$1; shift
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data=`echo $1 | sed 's/\//\\\\\//g'`; shift
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output=$1; shift
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(
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    echo "set terminal png" 
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    echo "set output '$output'" 
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    sed "s/@file@/$data/g" $script
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) > $script.plot
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gnuplot $script.plot
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rm $script.plot
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</pre>
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h2. Example
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This operator is used plotting the results in the stream [[Data mining complexity]].